From Bulbapedia, the community-driven Pokémon encyclopedia.
Kiko (Japanese: カコ Kako) is one of the two characters Ash and his friends meet in the beginning of the movie Arceus and the Jewel of Life. She is accompanied by Kato. She, along with Kato, had a Tag Battle with Ash and Dawn for the watermelons and explained to them about their town's ruins. As Ash and his friends return from the corrected past, with Arceus subsequently recognizing Ash from the past events and restoring the destruction, Kato and Kiko can be seen by a bridge witnessing the regeneration of the bridge's structure.
In the TCG
This listing is of cards mentioning or featuring Kiko or her Pokémon in the Pokémon Trading Card Game.
In the movie, Kiko appears to be wearing a pink Pokétch.